7TT8 image
Entry Detail
PDB ID:
7TT8
Keywords:
Title:
Human LRH-1 LBD bound to agonist 6N-10CA and fragment of Tif2 coactivator
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2022-01-31
Release Date:
2022-05-11
Method Details:
Experimental Method:
Resolution:
2.80 Å
R-Value Free:
0.27
R-Value Work:
0.22
R-Value Observed:
0.23
Space Group:
P 32 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Nuclear receptor subfamily 5 group A member 2
Chain IDs:A
Chain Length:246
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Nuclear receptor coactivator 2
Chain IDs:B (auth: C)
Chain Length:14
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation

Abstact

Liver receptor homologue-1 (LRH-1) is a phospholipid-sensing nuclear receptor that has shown promise as a target for alleviating intestinal inflammation and metabolic dysregulation in the liver. LRH-1 contains a large ligand-binding pocket, but generating synthetic modulators has been challenging. We have had recent success generating potent and efficacious agonists through two distinct strategies. We targeted residues deep within the pocket to enhance compound binding and residues at the mouth of the pocket to mimic interactions made by phospholipids. Here, we unite these two designs into one molecule to synthesize the most potent LRH-1 agonist to date. Through a combination of global transcriptomic, biochemical, and structural studies, we show that selective modulation can be driven through contacting deep versus surface polar regions in the pocket. While deep pocket contacts convey high affinity, contacts with the pocket mouth dominate allostery and provide a phospholipid-like transcriptional response in cultured cells.

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Primary Citation of related structures